<html>
	<head>
		<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js"></script>
		
	</head>

	<body>
		<form>
			<input type="text" name="cp" id="cp" size="5" onkeyup="update_town(this.value);" />
			<select name="town" id="town" style="width: 100px;">
				
			</select>
		</form>
	</body>
	
</html>